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QEMU Virtual Machine Installation

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Lean's edited this page Oct 18, 2025 · 12 revisions

Downloading

  • sudo pacman -S qemu-full virt-manager virt-viewer dnsmasq vde2 bridge-utils openbsd-netcat ebtables iptables

  • Enable libvirtd

  • sudo systemctl enable libvirtd

  • Add you to the libvirt groups

  • sudo usermod -aG libvirt $USER

  • Restart your system

  • sudo reboot now

Enable internet connection on VM

  • sudo virsh net-start default
  • sudo virsh net-autostart default

TPM (Trusted Platform Module emulation)

  • TPM Dependency

  • sudo pacman -S swtpm
  • Open virt-manager
  • Open your VM
  • Show virtual hardware details
  • Add Hardware
  • TPM
image

Secure Boot

  • Download Fedora available secure boot for linux

  • auracle clone edk2-ovmf-fedora-bin

  • If the secure boot is not auto enabled in your machine, go to xml and find for:

<os firmware="efi">
    <type arch="x86_64" machine="pc-q35-10.1">hvm</type>
    <firmware>
      <feature enabled="no" name="enrolled-keys"/> <!-- ADD THIS -->
      <feature enabled="yes" name="secure-boot"/> <!-- ADD THIS -->
    </firmware>
    <loader readonly="yes" secure="yes" type="pflash" format="raw">/usr/share/edk2/x64/OVMF_CODE.secboot.4m.fd</loader> <!-- ADD THIS -->
    <nvram template="/usr/share/edk2/x64/OVMF_VARS.4m.fd" templateFormat="raw" format="raw">/var/lib/libvirt/qemu/nvram/VIRTUALMACHINENAME!!!!!!_VARS.fd</nvram> <!-- ADD THIS -->
  </os>
  • Don't forget to add the machine name in !

GPU virtualization

This methods creates a virtual GPU for the VM

PCI GPU passthrough

This methods completly remove your gpu from the main host machine, and put it on VM Unfortunately to this works you will need a secondary gpu

  • go to BIOS in your system
  • enable virtualization
  • enable IOMMU

Get the GPU id and GPU audio id, find than and save it, this is the gpu used for the main linux

  • lspci -nn / NVIDIA simple: lspci -nn | grep "NVIDIA"

ID Example

[0030]: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] [10de:1b06] <-- this is the graphics id
[0030]: NVIDIA Corporation GP102 HDMI Audio Controller [10de:10ef] <-- this is the audio id

Enabling IOMMU in grub

  • sudo vim /etc/default/grub
#AMD for AMD intel for intel..., change the id by the one you get from previous section
GRUB_CMDLINE_LINUX_DEFAULT="amd/intel_iommu=on vfio-pci.ids=graphicsId,audioId"
  • sudo update-grub
  • reboot

Now pickup the id from your integrated gpu or secondary gpu, this is the gpu used for virtual machine Add the ids in vfio

  • sudo vim /etc/modprobe.d/vfio.conf
options vfio-pci ids=graphicsId,audioId
#This is not necessary but if you having problems try this, i dont know what this does but maybe your games outside the VM stop working
softdep nvidia pre: vfio-pci

Rebuilt init

  • sudo mkinitcpio -p linux
  • reboot

Open your virtual manager and check somethings

  • chipset: Q35
  • firmware: UEFI

Add new PCI Host device

Graphics

  • 0000:001:... [NVIDIA]...

Audio

  • 0000:002:... [NVIDIA]...
  • have fun

Finish

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